POISON: LAERISSS

A variety of osssra oil, the creations of yuan-ti spellcasters, osssra oils are mixtures of substances that produce pungent, colourful smoke when burned.

Yuan-ti typically immerse small pieces of firewood in osssra oil for 1D4 days and then burn them to create the smoke. A single vial of oil can treat enough wood to fill a 50-foot-square room with smoke for at least 4 hours. If ignited directly, the smoke fills the same area, but lasts for only 5 rounds. Once ignited by either method, osssra oil emits a cloudof coloured smoke that moves outward from itssource as a spread at the rate of 1 foot per round, to a maximum diameter of 60 feet. Osssra smoke is heavily scented, but it does not cause coughing, choking, or any other effect associated with tainted or insufficient air. The smoke has the same effect of a Fog Cloud spell (caster level 10th).

The secrets of making osssra oil is guarded by yuan-ti tribal elders, and most humans know too little about them to distinguish one oil from another. In some large cities or ports where there is little scrutiny from authorities, merchants often sell osssra oil as 'cooking oils' or 'scents'.

Varieties of osssra oil exist, and these varieties have their own qualities individual to them. Some confer benefits on all Scaled Ones but functions as an inhaled poison for all other creatures. In some cases direct contact with the oil in either ignited or unignited form is necessary to reeive the benefit. Varieties of osssra oil include: Amasstarte, Battasss, Duthlah'hass, Ektharisss, Faele, Hooloond, Jalasss, Laerisss, Ruusstantar, and Ulathlasss. Although some effects resemble those of spells, they are not magical effects. Thus, they can not be dispelled or prevented by spell resistance.

Successful Fortitude roll negates. Failure means initial effect is followed 1 minute later by secondary effect if another Fortitude save fails.

Based on entry in Forgotten Realms: Serpent Kingdoms P.151